The practice of calorie restriction slows near all measures of aging, slowing aging to a degree that appears to scale down with increased species life span. Calorie restricted mice live 40% longer, but calorie restricted humans are thought to at most gain five years or so – though a firm number has yet to be determined in our species. The short term changes to metabolism and benefits to health are nonetheless quite similar. As a companion piece to recent work on the effects of calorie restriction on cellular senescence, this open access paper makes for interesting reading. Senescent cells accumulate with age, and the damage they do to their environment via a potent mix of signal molecules is one of the root causes of aging and age-related disease. Unsurprisingly, calorie restriction slows this accumulation, just as it impacts all other processes of aging.
White adipose tissue (WAT) forms an endocrine organ with both positive and negative effects on metabolism. By secreting adipokines, adipocytes regulate metabolism, energy intake, and fat storage. Adipocytes are known to enlarge during obesity and the ageing process.
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